Karttunen, Frances; Lockhart, James (1976). Nahuatl in the Middle Years: Language Contact Phenomena in Texts of the Colonial Period. Berkeley: University of California Press. OCLC702445900.
Frances Karttunen y R. Joe Campbell (1994) Foundation Course in Nahuatl Grammar, 2 volúmenes. Austin: University of Texas, Instituto de Estudios Latinoamericanos OCLC21883759